Sony Corporation

Sony Computer Entertainment Inc.

Sumio Morioka

Shiho Moriai

Muneki Shimada

Masafumi Kusakawa

Dai Sasaki

Kyoji Shibutani

Asami Yoshida

Masanobu Okabe

The present invention is directed to an information processing system composed of plural information processing units adapted for mutually executing data communication, and for executing data processing in which communication data has been applied. The first entity A transmits error notification data on the basis of error detection to execute initial state return processing on the condition that data reception after error notification data has been transmitted is made, and the second entity B transmits error notification data on the basis of error detection to execute initial state return processing on the condition that transmit processing of error notification data is executed. Thus, the both entities A and B can return to the initial state in a manner synchronous with each other. As a result, it becomes possible to perform reliable error recovery and data processing restart.

Information processing apparatus, information processing system, information processing method and computer program

A data processing apparatus that tests whether a secure circuit is normal or not while maintaining confidentiality of the secured circuit is provided: wherein the secured circuit conducts a self-diagnostic test thereof in accordance with a self-diagnostic test start instruction signal from a CPU, and the secured circuit outputs a self-diagnostic test result signal indicating whether the secured circuit is normal or not to the CPU.

Data processing apparatus, program, and method for testing a secured circuit and maintaining confidentiality of the circuit

Growing community of inventors

Kanagawa, Japan

Sumio Morioka